There are twelve different stones listed as birthstones for the calendar month of April, or as Sun/Star, Planetary, or Talismanic stones for the Zodiac sign of Aries or Taurus. But the most traditional stone is the diamond.
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Diamonds symbolize purity, eternal love and faith. Diamond birthstone has a great suitability in jewelry, providing exquisite diamond settings. Diamond gemstone is judged by the "four Cs": carat, clarity, color, and cut. Diamond jewelry absorbs negative energy and transforms it into a positive one. Worn close to the body, diamond gemstone stimulates the intellect.